If it's a 1960 car I assume it's a 105e. From memory, I think you move the gear lever over to the left, lift it slightly and move it down to the left. A current 105e owner might prove me wrong though!
My 100e (1960) is as Rooster says - There are only three gears you see! However the 105e is across the car to far right in the neutral plane, lift slightly then back towards you. Stick ends up adjacent to left thigh